Britain's Catherine, Duchess of Cambridge, visits the "Vogue 100: A Century of Style" exhibition at the National Portrait Gallery in central London on May 4, 2016. Forming part of the magazine's centenary celebrations, Vogue 100: A Century of Style showcases the range of photography that has been commissioned by British Vogue since it was founded in 1916. (Photo by Ian Gavan / POOL / AFP) (Photo by IAN GAVAN/POOL/AFP via Getty Images)